What is CVE-2022-48961?

CVE-2022-48961 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 4.5 onward and patched in 5.15.83, 6.0.13 and 6.1. CVE-2022-48961 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2022-48961?

CVE-2022-48961 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2022-48961?

Yes, CVE-2022-48961 has been patched. Fixed versions include 5.15.83, 6.0.13 and 6.1. If you are running Linux kernel 4.5 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2022-48961 actively exploited?

CVE-2022-48961 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2022-48961

Medium

In the Linux kernel, the following vulnerability has been resolved: net: mdio: fix unbalanced fwnode reference count in mdio_device_release() There is warning report about of_node refcount leak while probing mdio device: OF: ERROR: memory leak, expected refcount 1 instead of 2, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /spi/soc@0/mdio@710700c0/ethernet@4 In of_mdiobus_register_device(), we increase fwnode refcount by fwnode_handle_get() before associating the of_node with mdio device, but it has never been decreased in normal path. Since that, in mdio_device_release(), it needs to call fwnode_handle_put() in addition instead of calling kfree() directly. After above, just calling mdio_device_free() in the error handle path of of_mdiobus_register_device() is enough to keep the refcount balanced.

Package Linux Kernel

Published 2024-10-21

Last modified 2024-10-24

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 4.5 and later are affected. Fixed in 5.15.83, 6.0.13, 6.1 and their respective stable series.

Affected from

≥ 4.5

Fixed in

✓ 5.15.83 5.15.x ✓ 6.0.13 6.0.x ✓ 6.1

References

The following references provide additional information about CVE-2022-48961 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/16854177745a5648f8ec322353b432e18460f43a
Patch
Kernel patch commit
https://git.kernel.org/stable/c/a5c6de1a6656b8cc6bce7cb3d9874dd7df4968c3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/cb37617687f2bfa5b675df7779f869147c9002bd
Patch

Details

CVE ID CVE-2022-48961

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-10-21

Modified 2024-10-24

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2022-48961?

CVE-2022-48961 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 4.5 onward and has been patched in 5.15.83, 6.0.13 and 6.1. CVE-2022-48961 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2022-48961?

CVE-2022-48961 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2022-48961?

Yes — CVE-2022-48961 has been patched. Fixed versions include 5.15.83, 6.0.13 and 6.1. If you are running Linux kernel 4.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2022-48961 actively exploited?

No — CVE-2022-48961 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.